Rollup config for js and ts

package.json

{
  "name": "",
  "version": "0.1.0",
  "description": "",
  "main": "./dist/index.js",
  "module": "./dist/index.mjs",
  "types": "./dist/index.d.ts",
  "exports": {
    ".": {
      "require": "./dist/index.js",
      "import": "./dist/index.mjs",
      "types": "./dist/index.d.ts"
    }
  },
  "scripts": {
    "build": "rollup -c"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "esbuild": "^0.14.43",
    "rollup": "^2.75.6",
    "rollup-plugin-dts": "^4.2.2",
    "rollup-plugin-esbuild": "^4.9.1",
    "typescript": "^4.7.3"
  }
}

rollup.config.js

import { defineConfig } from "rollup"
import esbuild from "rollup-plugin-esbuild"
import dts from "rollup-plugin-dts"
const name = require("./package.json").main.replace(/\.js$/, "")

export default defineConfig([
  {
    input: "src/index.ts",
    plugins: [esbuild()],
    output: [
      {
        file: `${name}.js`,
        format: "cjs",
        sourcemap: true,
      },
      {
        file: `${name}.mjs`,
        format: "es",
        sourcemap: true,
      },
    ],
  },
  {
    input: "src/index.ts",
    plugins: [dts()],
    output: {
      file: `${name}.d.ts`,
      format: "es",
    },
  },
])